Selle Italia SLR Boost Kit Carbonio Superflow Saddle (Black) (L3) (145mm) (Carbon Rails)

Selle Italia SLR Boost Kit Carbonio Superflow Saddle (Black) (L3) (145mm)
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Price: $379.90

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The Selle Italia SLR Boost Kit Carbonio Superflow Saddle is designed for the highest levels of racing. Light and comfortable, it is well-suited to aero riding positions with SuperFlow technology and a "Boost" nose for a better fit. To minimize weight without losing durability, this saddle is constructed with a carbon-infused shell and ceramic-coated carbon rails. With Selle Italia's ID Match system there is a saddle size and profile for every type of rider and riding style.


  • Selle Italia's lightest short saddle
  • ''Boost'' short nose improves thigh clearance, saddle fit and reduces weight
  • SuperFlow technology drastically reduces pressure in the perineal area
  • Carbon infused shell ensures low weight and durability
  • Fibra-Tek cover, made from a strong, highly durable and lightweight technical microfiber material
  • CarboKeramic rails, made from ceramic-coated carbon, offer low weight and superior clamping resistance

Length: 248mm
Rail Size: 7 x 9mm (Oval)
Rail Material: Carbon/Ceramic
Cover Material: Fibra-Tek
Gender: Universal
Color: Black
Weight: 122g (S3), 129g (L3)

Learn about saddle rails

This product was added to our catalog on October 18, 2021

Selle Italia offers 6 size variations of saddles to suit the needs of a wide variety of cyclists.

  • S size saddles are for riders with narrow intertrochanteric distance (pelvic width) and L size saddles are for riders with wide intertrochanteric distance.
  • The number associated with the size corresponds to whether or not the saddle has a central hole. S1 and L1 saddles have no central hole, S2 and L2 saddles have a medium-sized central hole (Flow), and S3 and L3 saddles have a large central hole (Superflow). For the right fit, match pelvic flexibility and rotation to the appropriate number.

SizeIntertrochanteric DistancePelvic RotationSaddles
S3NarrowHighFlow & Superflow
L3WideHighFlow & Superflow

Note: All measurements are provided by the manufacturer and may vary depending on how measurements are acquired.